My personal opinion that for heavy better to use 18.3.1 driver. Blockchain driver is not stable on Heavy with max intensities
do you use PPT on custom cards also or are you on reference cards?
my reference running on blockchain run fine on high intensity about 1280h/s 140w 1407/1100 ? stable 18+ hours
ill try the drivers on my custom cards as the above settings seems to crash and not detect on vega on reboot. I then need to reboot once more for it to show up. (could this be a bios thing perhaps?) I set all to gen2 and above 4g enabled.
EDIT: Tried 18.3.1 - lose around 250h/s a card